---
product_id: 729175994
title: "Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20\" Wheels Steel Frame Multicolor"
brand: "mongoose"
price: "12432391₫"
currency: VND
in_stock: false
url: https://www.desertcart.vn/products/729175994-mongoose-legion-freestyle-bmx-bicycle-line-for-kids-youth-beginner
store_origin: VN
region: Vietnam
---

# 20" durable wheels 170mm forged steel crank Hi-Ten steel frame Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor

**Brand:** mongoose
**Price:** 12432391₫
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Own the streets, master the ramps — ride the Mongoose Legion L20!

## Quick Answers

- **What is this?** Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor by mongoose
- **How much does it cost?** 12432391₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/729175994-mongoose-legion-freestyle-bmx-bicycle-line-for-kids-youth-beginner)

## Best For

- mongoose enthusiasts

## Why This Product

- Trusted mongoose brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smooth Power Transfer:** 170mm one-piece forged steel crank paired with a 25T alloy chainring offers a clean, high-performance drivetrain.
- • **Built to Last, Ride to Win:** Hi-Ten steel frame with 5-year limited warranty ensures long-lasting durability for every stunt and street session.
- • **Grip the Streets and Trails:** 20" x 2.3" BMX tires on aluminum single-wall 36H rims provide superior traction and rugged durability.
- • **Tailored for the Rising Rider:** Designed for youth 4'8" to 5'4" with a 20.25" top tube and adjustable components for perfect fit and control.
- • **Precision Control at Your Fingertips:** Aluminum U-brakes and levers deliver responsive, reliable speed control for confident riding.

## Overview

The Mongoose Legion L20 is a versatile 20" freestyle BMX bike engineered for youth riders from beginner to advanced levels. Featuring a durable Hi-Ten steel frame, precision aluminum U-brakes, and a high-performance 170mm forged steel crank drivetrain, it delivers reliable control and power. Designed for riders between 4'8" and 5'4", this bike combines rugged 2.3" BMX tires on lightweight aluminum rims with a 5-year frame warranty, making it the ultimate choice for street, park, and dirt riding adventures.

## Description

For 45 years, Mongoose has been in the soil, down the trail and riding the ramp. In the Legion series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability. The Legion L20 is designed as a BMX bike for the park, street, and dirt worthy. The Legion L20 features a Hi-Ten steel frame (20.25" top tube), a tapered head tube, and a removable brake mount. The L20 Hi-Ten Steel 8" Rise Handlebar and 48mm Stem are designed for precision riding, the wide aluminum single wall 36H rim and 2.3" BMX tires provide grip and durability. 25 x 9T gear with one piece tubular chromoly 170mm hollow spindle crank and American loose ball bottom bracket provides a clean, reliable drivetrain. Alloy U-brakes with alloy brake levers provide speed control, Hi-Ten Steel BMX forks and 1-1/8" threadless steerers and tapered legs for maximum performance. This bike comes ready to build. Frame comes with a 5 year limited warranty and 1 year limited warranty.

## Features

- The L20 is a stylish freestyle BMX bike that offers everything that beginner riders need to get out of the street and get out of the curves. Recommended rider height is 4'8"-5'4"
- Hi-Ten steel frame, removable brake mount, top tube length is 20.25" and will last for a long time
- It boasts a high-performance drivetrain with a 170mm one-piece forged steel crank, 25T alloy chain ring, and American loose ball bottom bracket
- Wheelset features a 20" x 2.3" tire mounted on aluminum single wall 36H rim with a 3/8" female axle front hub and 9T cog seal bearing cassette rear hub
- Aluminum U-brakes and brake levers provide precise speed control, Hi-Ten steel handlebars and forks are combined with 50mm stem and threadless sealed integrated headsets for maximum steering performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Model Number | M41800U10OS-PC |
| Color | blue |
| Size | 20-Inch Wheels L20 |
| Material | Steel |
| Number of Speeds | 1 |
| Usage | Trail |
| Wheel Size | 20 Inches |
| Batteries Included | No |
| Target Audience | Women's |
| Style Features | Sporty |
| Maximum Weight Recommendation | 250 Pounds |
| Product Dimensions | 60 x 22 x 124 cm; 12 kg |

## Product Details

- **Bike Type:** BMX Bike
- **Age Range (Description):** Big Kid
- **Brand:** Mongoose
- **Number of Speeds:** 1
- **Color:** blue

## Images

![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 1](https://m.media-amazon.com/images/I/71n8eMXVgML.jpg)
![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 2](https://m.media-amazon.com/images/I/7104vNsT9jL.jpg)
![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 3](https://m.media-amazon.com/images/I/61l3PCXd5kL.jpg)
![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 4](https://m.media-amazon.com/images/I/71AmyYF5thL.jpg)
![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 5](https://m.media-amazon.com/images/I/71vD4WZApBL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Frequently Bought Together

- Mongoose Legion Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing
- Zelerdo 2 Pairs Aluminum Alloy Bike Pegs for Mountain Bike Cycling Rear Stunt Pegs Fit 3/8 inch Axles
- Mongoose Legion Freestyle BMX Bike for Advanced-Level or Professional Riders, Adult Men Women, 4130 Chromoly Frame, and 20-Inch Wheels

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-01-29*